Clean-out for drain or soil pipes.



N0. 694-,l40. Patented Fab. 25, I902.

- J. CRAWFORD.

CLEAN OUT FOR DRAIN 0B SOIL PIPES.

(Application filed June 6, 1901.)

(No Model.)

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UNITED STATES PATENT OFFICE.

JAMES ORAWVFORD, OF BOSTON, MASSACHUSETTS.

CLEAN-OUT FOR DRAIN OR SOIL PIPES.

SPECIFICATION forming part of Letters Patent No. 694,140, dated February 25, 1902. Application filed June 6, 1901. Serial No. 63,420. (No model.)

T0 at whom it may concern.-

Be it known that I, JAMES CRAWFORD, a citizen of the United States, residing at Boston, in the county of Suffolk and State of Massachusetts, have invented new and useful Improvements in Clean-Outs for Drain or Soil Pipes, of which the following is a specification.

This invention relates to improvements in clean-out for drain or soil pipes, as will hereinafter be more fully shown and described, reference being had to the accompanying drawings, where- Figure 1 represents a top plan view of the improved clean-out. Fig. 2 represents a central longitudinal section on the line 2 2 shown in Fig. 1. Fig. 3 represents a horizontal section the line 3 3 shown in Fig. 2. Fig. 4. represents a sectional view similar to Fig. 2, showing the metal cap and screw-threaded brass ring removed from the body portion of the device. Fig. 5 represents a side elevation of the internally-screw-threaded brass ring to which the brass cap is detachably connected. Fig. 6 represents a cross-section of said screwthreaded brass ring, taken on the line- 6 6 shown in Fig. 5; and Fig. 7 represents a crosssection on the line 7 7 shown in Fig. 4.

Similar letters refer to similar parts wherever they occur on the diiferent parts of the drawings.

In the drawings, A represents the brass cap or cover, as usual having on its under side an externally screwthreaded portion A and having on its upper side a hexagonal or equivalent projection A, adapted to be turned by means of a suitable wrench, as usual, for securing such cap in place or removing it when so desired.

B is the cast-iron body of the clean-out, the lower end of which is suitably connected to the soil or drain pipe 0, as usual.

In devices of this kind the cap A is usually made of brass, and the body B, into which the cap A is screwed, is either made of brass or cast-iron. Making such entire body portion of brass is objectionable on account of the expenseincurred. Makingsuchbodyportion of cast-iron is objectionable on account of its interior upper screw-threaded portion being liable to oxidation, disintegration by rust, and thereby adhering to the screw-cap, so as to prevent its ready removal in using the cleanout, and to obviate such objections'l construct my device as follows: To the interior upper portion of the cast-iron body B, I secure a brass ring D, having an internal screw-thread adapted to receive the screw-threaded portion ofthe brass cap A, as shown in Figs. 2, 3, 5, and 6. The said brass ring D and upper portion of the cast-iron bodyB are cast together either by first casting said brass ringD and atterward casting the upper portion of the body B around it or by first casting said body 13 and afterward casting the brass ring D within said body B, as may be most suitable and practical. For the purpose of securing said brass ring D within the interior of the upper portion-0f the body B, I prefer to make the outer periphery of said brass ring upwardly tapering, as shown at d in Fig. 5, adapted to be received in a correspondingly-shaped interior annular tapering recess 1) in the upper portion of the body B, as shown in Figs. 2 and 4. On the interior of the upper recessed portion 1) of the body B, I make a series of inwardly-projecting lugs 19 b 1), adapted to enter corresponding peripheral recesses d d on the brass ring D, as shown in Figs. 5 and 6. By this arrangement I cause the said brass ring D to be firmly secured within the upper portion of the body B, thus preventing said ring D from turning within the body B when securing or removing the cap A. For the purpose of preventing the said brass ring D from moving downward within the body B, I prefer to make on the interior of the latter an annular shoulder or projection B, upon which the said brass ring D is supported, as shown in Figs. 2 and 4.

E in Fig. 2 is a packing-ring arranged between the under side of the cap A and upper end of the body B, as usual. By this ar rangement it will be seen that I secure within the upper end of the body B an annular brass ring or lining, screw-threaded on its interior to receive the screw-threaded brass shank A of the cap A, by which construction the device is materially improved and the working parts prevented from oxidation and disintegration by rust, &c., as hereinabove described.

In the drawings I have shown the interior portion of the body B provided with projections and the exterior of the brass ring D cast-iron body portion B, and an annular projection or shoulder B on the interior of said body- B below the said brass ring D, said shoulder serving as a rest or support for said brass ring substantially as and for the purpose set forth.

In testimony whereof I have hereunto set my hand in presence of'two subscribing witnesses.

- JAMES CRAWFORD.

Witnesses:

ALBAN ANDREn, LAURITZ N. MOLLER. 

